Scarlett Johansson joined Captain America costars Jeremy Renner and Chris Evans for a surprise event at D23 in California over the weekend.

During the event, Disney and Marvel announced several new projects and shared clips from next year’s Captain America: Civil War, including a kick-ass sequence of Scarlett Johansson, who portrays Black Widow, battling Hawkeye, played by Jeremy Renner.

The clip has yet to be released but the footage shows an apparent fight between Black Widow and Hawkeye. The twosome are generally allies, so who knows why they are suddenly beating the crap out of each other.

According to Forbes reporter Mark Hughes, the footage shared on Saturday offered fans a first glimpse of new villain Crossbones, as reported by The Inquisitr.

“The footage begins with the Captain America, Falcon, and Black Widow in position for a battle, surveying a busy city street. Falcon deploys a flying drone that swoops down into traffic and up under a large vehicle. The truck’s occupants are Crossbones and his crew, and a large battle commences between these villains and Cap’s team. While Captain America fights Crossbones, Falcon and Black Widow take down the rest of the criminals.

"We see lots of damage done to the surrounding street and buildings, and Cap’s shield ends up with a bomb attached to it, so he throws it just before the bomb explodes. Crossbones finally falls, defeated, and removes his mask. He mentions Bucky Barnes — aka the Winter Soldier, whom Cap has been trying to track down — and Captain America seems shocked.”

Scarlett Johansson, who never really wanted to go the superhero route, has said that she loves playing Black Widow because the character is so complex.

“I really enjoy playing this character. She was really the first female superhero, a reluctant one. She’s never really been able to forge close relationships with anybody. She’s a lone wolf,” Scarlett Johansson told Parade magazine.